RiOS v6.1 or later is required when the user is in a different domain from the servers in question, and the server domain has a one-way trust relationship with the user domain.

RiOS v7.0 or later is required in a one-way trust scenario, when clients use Windows 7 or Windows 2008 R2.

RiOS v8.5 is required in a one-way trust scenario, when clients use Windows 8 and servers use Windows Server 2012.

RiOS v9.0 is required in a one-way trust scenario, when clients use Windows 8.1 and Windows Server 2012 R2.

You typically see this scenario when an organization uses an external service provider to provide file or mail services. The external service provider creates a one-way trust to the organization domain so that the organization users can authenticate on the service provider servers.

For more information about required configuration when the server domain has a one-way trust to the user domain, see One-Way Trust Configuration.

For information about checking the domain level and settings, and information about checking and creating authentication with Manual and Auto-Delegation modes, see the SteelHead Management Console User’s Guide.